Triangle & Squarewave Generator: Build Your 1458 Circuit 10KHz

A straightforward triangle/squarewave generator employing a prevalent 1458 dual operational amplifier is presented. This circuit is suitable for generating signals across a wide frequency spectrum, ranging from very low frequencies up to approximately 10 kHz. The duration of one cycle is roughly determined by the product of R and C, and the outputs deliver roughly 10 milliamperes of current. The triangle wave’s amplitude can be modified by adjusting the 47K resistor, and the waveform’s phase offset can be eliminated through the addition of a capacitor in series with the output.

Operational Amplifiers

Operational amplifiers, often abbreviated as op-amps, are fundamental building blocks in analog electronic circuits. These integrated circuits are high-gain, direct-coupled devices that amplify small input signals to produce a larger output signal. The 1458 is a dual op-amp, meaning it incorporates two independent op-amps within a single package. This configuration is frequently used in circuits requiring two independent amplification stages or circuits that utilize both op-amps simultaneously. Common op-amp applications include amplifiers, filters, oscillators, and comparators. Their versatility and readily available integrated circuit packages have made them ubiquitous in a vast array of electronic devices. The 1458 dual op-amp offers a convenient and cost-effective solution for circuits needing two independent amplification stages or other op-amp-based functionalities. The device is known for its stability and performance across a wide range of operating conditions. The integration of two op-amps significantly reduces circuit complexity and size, making it suitable for numerous applications.

Circuit diagram